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zhenek [66]
2 years ago
13

Please help I can't understand and my teacher is not explaining properly.

Mathematics
1 answer:
ludmilkaskok [199]2 years ago
7 0

Answer:

B=100

Step-by-step explanation:

The given circle is

Consider the triangle AOB, Using the triangle sum property, we get

AOB+AOB+BOA=180

Substitute ABO=55 and BAO=45 we get

AOB+55+45=180

AOB+100=180

AOB+100-100=180-100

AOB=80

Here AOB and AOC are supplementary angles

The sum of the supplementary angles is 180 degrees.

AOB+AOC=180

Substitute AOB=80 we get

80+AOC=180

80+ AOC-80=180-80

AOC=100

Now consider the Central angle AOC  and intercepted arc AC.

mAOC=mAC

Substitute m AOC=100 and mAC=b we get

100=b

Hence the value of b is 100 degrees.

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the hypotenuse of a 45°-45°-90° triangle measures 128 cm. What is the length of one leg of the triangle? 64 cm cm 128 cm cm
Kisachek [45]

Answer:

length of one leg of the triangle is 64 cm.

Step-by-step explanation:

Given : The hypotenuse of a 45°-45°-90° triangle measures 128 cm.

To find  : What is the length of one leg of the triangle.

Solution : We have given that hypotenuse of a 45°-45°-90° triangle measures 128 cm.

By the 45°-45°-90° triangle rule ,

Perpendicular sides  (legs) are equal .

Hypotenuse  =  √2 × either perpendicular side ( leg ).

128 = √2 ×  leg .

We can write 128 as  64 √2 and substitute in above

64√2 = √2 leg.

On dividing by √2 both sides and switching sides.

leg  = 64 cm .

Therefore,  length of one leg of the triangle is 64 cm.

7 0
3 years ago
The company charges $5 per sq ft, AND has a minimum charge of 3 sq ft per order (meaning if a customer orders something SMALLER
Svetach [21]

Answer:

12 inches by 12 inches = 15 dollars

48 inches by 48 inches = 80 dollars

Step-by-step explanation:

12 inches = 1 ft

so 12 inch by 12 inches  is 1 ft * 1 ft

1 ft* 1 ft

1 ft^2

This is smaller than 3 ft^2 so they will get charged for 3 ft^2

3 ft^2 = 3 ft^2 * $5 / ft^2 = 15 dollars

48 inches = 48/12 = 4 ft

4ft * 4 ft = 16 ft^2

16 ft^2 = 16 ft^2 * $5 / ft^2 = 80 dollars

8 0
3 years ago
HELP ME PLS IM HELLA DUMB
Anna [14]
Ur not dumb!!! i graphed the line for u here. i suggest watching some khan academy videos for extra practice!

6 0
3 years ago
Please see attached. <br> Please explain.
Gemiola [76]
Your mom can explain ok stop asking
8 0
3 years ago
A plane flies 3115.8 miles in 7.2 hours. What is its average speed? (Speed =
Tatiana [17]
Average speed =  total distances / total time

3115.8 / 7.2 = 432.75 mi/h
8 0
3 years ago
Read 2 more answers
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